Acura CSX. Manual — part 656
*01
*02
*03
−
−
−
−
YES
NO
From terminal
To terminals
YES
NO
23-335
HANDSFREELINK CONTROL UNIT 28P CONNECTOR
NAV
COMM3 (RED)
NAV
COMM4 (WHT)
NAV
COMM2 (GRN)
NAV
COMM1 (BLK)
JUMPER WIRE
JUMPER WIRE
NAVIGATION UNIT CONNECTOR B (24P)
HFL/NAVI
COMM3 (RED)
HFL/NAVI
COMM4 (WHT)
HFL/NAVI COMM2 (GRN)
HFL/NAVI COMM1 (BLK)
NAVIGATION UNIT CONNECTOR B (24P)
13. Connect HandsFreeLink control unit 28P connector
terminals No. 6 and No. 7 with a jumper wire, then
connect the terminals No. 20 and No. 21 with a
jumper wire.
14. Check for continuity between navigation unit
connector B (24P) terminals No. 11 and No. 23 then
check for continuity between terminals No. 12 and
No. 24.
Go to step 15.
Open in the wire between the navigation unit
and the HandsFreeLink control unit. Replace the
affected shielded harness.
15. Disconnect the jumper wire.
16. Check for continuity between the terminals of
navigation unit connector B (24P) according to the
table.
B11 (GRN)
B12 (WHT), B23 (BLK),
B24 (RED)
B12 (WHT)
B23 (BLK), B24 (RED)
B23 (BLK)
B24 (RED)
Short in the wires between the navigation
unit and the HandsFreeLink control unit. Replace
the affected shielded harness.
Go to step 17.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e continuity?
08/08/21 14:17:49 61SNR030_230_0338
*04
−
−
SNR9ANGK761000N2706FAAT00
−
−
−
−
Navigation unit
connector
Wire color
YES
NO
YES
NO
DTC 2706:
23-336
23-336
Navigation System
NAVIGATION UNIT CONNECTOR B (24P)
17. Check for continuity between navigation unit
connector B (24P) and body ground according to
the table.
B11
GRN
B12
BLK
B23
WHT
B24
RED
Short to body ground in the wires between
the navigation unit and the HandsFreeLink control
unit. Replace the affected shielded harness.
Replace the HandsFreeLink control unit
(see page 23-388).
NOTE:
• Before you troubleshoot, make sure to follow the
general troubleshooting information (see page
23-266).
• Do this test only when the passenger’s compartment
temperature is between
20 °C (
4 °F) and 70 °C
(158 °F).
1. Clear the hard error code (see page 23-274).
2. Turn the ignition switch to LOCK (0), and then back
ON (II).
3. Check for the hard error code (see page 23-273).
Replace the navigation unit (see page 23-355).
Intermittent failure, the system is OK at this
time.
Gyro Diag: ECU Temp XX °C
Wire side of female terminals
Is ther e continuity?
Is DT C 27 06 indicated?
08/08/21 14:17:49 61SNR030_230_0339
SNR9ANGK761000N2707FAAT00
−
−
−
−
−
−
−
−
DTC 2707:
YES
NO
YES
NO
YES
NO
YES
NO
23-337
MIC Diag
NOTE: Before you troubleshoot, make sure to follow the
general troubleshooting information (see page 23-266).
1. Clear the hard error code (see page 23-274).
2. Turn the ignition switch to LOCK (0), and then back
to ON (II).
3. Go into the Diagnostic Menu, and select the Self-
Diagnosis Mode in the Select Diagnosis items
menu (see page 23-297).
4. Select the System Links.
Go to step 5.
Go to step 8.
5. Turn the ignition switch to LOCK (0).
6. Check for poor connections or loose terminals at
the HandsFreeLink control unit 28P connector, the
HFL-navigation microphone 3P connector, and the
navigation unit B (24P) connector.
Go to step 7.
Repair the poor connections or loose
terminals.
7. Check for DTCs with the HDS.
Troubleshoot the indicated DTC.
Replace the HFL-navigation microphone
(see page 23-358).
8. Select the Mic in the System Links.
9. Press the navigation Talk button on the steering
wheel switch, then check the Mic Level (see page
23-311).
Intermittent failure, the system is OK at this
time.
Replace the HFL-navigation microphone
(see page 23-358).
Is the Mic icon r ed?
Ar e the connections OK ?
Is DT C B17 7 5 or B17 7 6 indicated?
Is the micr ophone level OK ?
08/08/21 14:17:50 61SNR030_230_0340
*01
*02
SNR9ANGJ36100000000FAAT09
+
−
−
−
−
−
−
−
−
No picture is displayed
YES
NO
YES
NO
YES
NO
YES
NO
23-338
Navigation System
Symptom Troubleshooting
NAVIGATION UNIT CONNECTOR A (24P)
B BACK UP (WHT)
NAVIGATION UNIT CONNECTOR A (24P)
ACC RADIO (PUR)
NOTE:
• Check the vehicle battery condition first.
• Make sure that the correct DVD color and version are
installed.
• Check any official Honda service website for more
service information about the navigation system.
• Check the connectors for poor connections or loose
terminals.
• Before troubleshooting, make sure you have the
navigation system anti-theft code.
1. Check the No. 23 (10 A) fuse in the under-hood
fuse/relay box and the No. 35 (7.5 A) fuse in the
under-dash fuse/relay box, and reinstall the fuse if
it is OK.
Go to step 2.
Replace the fuse and recheck.
2. Turn the ignition switch to ON (II).
3. Operate the radio and listen to the audio.
Go to step 4.
Refer to audio system troubleshooting.
4. Turn the ignition switch to LOCK (0).
5. Remove the navigation unit (see page 23-355).
6. Measure the voltage between navigation unit
connector A (24P) terminal No. 24 and body ground.
Go to step 7.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between navigation unit
connector A (24P) terminal No. 14 and body ground.
Go to step 9.
Repair open in the wire between the under-
dash fuse/relay box and the navigation unit.
Wire side of female terminals
Wire side of female terminals
Is the f use OK ?
Can you hear the audio?
Is ther e batter y voltage?
Is ther e batter y voltage?
08/08/21 14:17:50 61SNR030_230_0341
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